try to debug Unmarshal() panic

Makefile

@@ -7,9 +7,11 @@ BUILDTIME = $(shell date +%Y.%m.%d_%H%M)
 # REDOMOD = $(shell if [ -e go.mod ]; then  echo go.mod; else echo no go mod; fi)
 REDOMOD = $(shell if [ -e go.sum ]; then  echo go.sum exists; else GO111MODULE= go mod init; GO111MODULE= go mod tidy; fi)
 
-all: goimports build
+all: goimports build nogui
 	./zookeeper --version
-	./zookeeper
+
+nogui:
+	./zookeeper --gui nocui
 
 build:
 	GO111MODULE=off go build -v -x \

apt.go

@@ -1,3 +1,6 @@
+// Copyright 2017-2025 WIT.COM Inc. All rights reserved.
+// Use of this source code is governed by the GPL 3.0
+
 package main
 
 import (

apt_linux.go

@@ -1,3 +1,6 @@
+// Copyright 2017-2025 WIT.COM Inc. All rights reserved.
+// Use of this source code is governed by the GPL 3.0
+
 package main
 
 import (

argv.go

@@ -1,3 +1,6 @@
+// Copyright 2017-2025 WIT.COM Inc. All rights reserved.
+// Use of this source code is governed by the GPL 3.0
+
 package main
 
 /*

distro.go

@@ -1,4 +1,7 @@
 // Copyright 2016 The go-qemu Authors.
+// Copyright 2017-2025 WIT.COM Inc. All rights reserved.
+// Use of this source code is governed by the GPL 3.0
+
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

doGui.go

@@ -84,12 +84,17 @@ func (tw *tableWindow) showTable(allm *zoopb.Machines) {
 		m := all.Next()
 		tw.grid.NewLabel(m.Hostname)
 		tw.grid.NewLabel(fmt.Sprintf("%d", m.Cpus))
-		tw.grid.NewLabel(fmt.Sprintf("%d", m.Memory))
+		gb := m.Memory / (1024 * 1024)
+		ms := fmt.Sprintf("%d MB", gb)
+		tw.grid.NewLabel(ms)
 		tw.grid.NewLabel(m.Distro)
 		tw.grid.NewLabel(findVersion(m, "zood"))
 		tw.grid.NewLabel(findVersion(m, "bash"))
 		dur := m.Laststamp.AsTime()
 		tw.grid.NewLabel(fmt.Sprintf("%v", time.Since(dur)))
+		tw.grid.NewButton("upgrade", func() {
+			log.Info("figure out upgrade", m.Hostname)
+		})
 		tw.grid.NextRow()
 	}
 }

http.go

@@ -1,3 +1,6 @@
+// Copyright 2017-2025 WIT.COM Inc. All rights reserved.
+// Use of this source code is governed by the GPL 3.0
+
 package main
 
 import (
@@ -37,6 +40,8 @@ func okHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	if route == "/machine" {
+		handleMachine(w, hostname, msg)
+
 		var m *zoopb.Machine
 		m = new(zoopb.Machine)
 		if err := m.Unmarshal(msg); err != nil {
@@ -97,7 +102,7 @@ func okHandler(w http.ResponseWriter, r *http.Request) {
 	if route == "/save" {
 		log.HttpMode(w)
 		defer log.HttpMode(nil)
-		if err := me.machines.ConfigSave(); err == nil {
+		if err := me.machines2.ConfigSave(); err == nil {
 			log.Log(NOW, "ConfigSave() ok")
 		} else {
 			log.Log(NOW, "ConfigSave() failed", err)

machine.go

@@ -1,6 +1,11 @@
+// Copyright 2017-2025 WIT.COM Inc. All rights reserved.
+// Use of this source code is governed by the GPL 3.0
+
 package main
 
 import (
+	"net/http"
+	"strings"
 	"time"
 
 	"go.wit.com/lib/protobuf/zoopb"
@@ -8,6 +13,26 @@ import (
 	"google.golang.org/protobuf/types/known/timestamppb"
 )
 
+func handleMachine(w http.ResponseWriter, hostname string, data []byte) {
+	hostname = strings.TrimSpace(hostname)
+	if hostname == "" {
+		log.Info("something went wrong. hostname is blank")
+	}
+	log.Info("lookoing for", hostname)
+	m := me.machines.FindByHostname(hostname)
+	if m == nil {
+		newm := new(zoopb.Machine)
+		err := newm.Unmarshal(data)
+		if err != nil {
+			log.Info("machine Unmarshal() failed", hostname)
+			return
+		}
+		me.machines.Append(newm)
+		return
+	}
+	log.Info("not new machine", hostname)
+}
+
 // someone sent machine 'u' is it new?
 // if not, update the record of it
 func updateMachine(u *zoopb.Machine) string {
@@ -18,6 +43,8 @@ func updateMachine(u *zoopb.Machine) string {
 	if m == nil {
 		log.Info("adding new machine", u.Hostname)
 		me.machines.Append(u)
+		log.Info("save machines pb file here...")
+		// me.machines.ConfigSave()
 		return "new"
 	}
 	// log.Info("updating machine", m.Hostname)

main.go

@@ -1,16 +1,5 @@
-// Copyright 2016 The go-qemu Authors.
+// Copyright 2017-2025 WIT.COM Inc. All rights reserved.
-//
+// Use of this source code is governed by the GPL 3.0
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//   http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
 
 package main
 
@@ -47,7 +36,8 @@ func main() {
 	me = new(stuff)
 	me.hostname, _ = os.Hostname()
 	me.pollDelay = 10 * time.Second
-	me.machines = new(zoopb.Machines)
+	me.machines = zoopb.NewMachines()
+	me.machines2 = zoopb.NewMachines()
 	if err := me.machines.ConfigLoad(); err != nil {
 		log.Warn("load config failed", err)
 		os.Exit(-1)

structs.go

@@ -1,3 +1,6 @@
+// Copyright 2017-2025 WIT.COM Inc. All rights reserved.
+// Use of this source code is governed by the GPL 3.0
+
 package main
 
 import (
@@ -18,6 +21,7 @@ type stuff struct {
 	distro    string            // debian,redhat,gentoo,macos,wincrap
 	packages  *zoopb.Packages   // installed packages and versions
 	machines  *zoopb.Machines   // every machine that has reported itself to the zookeeper
+	machines2 *zoopb.Machines   // every machine that has reported itself to the zookeeper
 	targets   map[string]string // what versions the machines should be running
 	upgrade   map[string]bool   // use this to trigger builds
 	myGui     *gui.Node         // the gui toolkit handle

tableWindow.go

@@ -89,6 +89,7 @@ func makeTableWindow() *tableWindow {
 	pw.grid.NewLabel("zood")
 	pw.grid.NewLabel("bash")
 	pw.grid.NewLabel("age")
+	pw.grid.NewLabel("upgrade")
 	pw.grid.NextRow()
 
 	// add the patches to the grid

watchdog.go

@@ -1,3 +1,6 @@
+// Copyright 2017-2025 WIT.COM Inc. All rights reserved.
+// Use of this source code is governed by the GPL 3.0
+
 package main
 
 import (